* {
  margin: 0;
  padding: 0;
  list-style: none;
  font-style: normal;
  text-decoration: none;
  user-select: none;
}
body {
  background-color: #f4f4f4;
}
.w {
  margin: 0 auto;
  width: 1190px;
}

.jd-nav {
  height: 30px;
  line-height: 30px;
  border-bottom: 1px solid #ddd;
  background-color: #e3e4e5;
}

.jd-search {
  background: #fff;
  border-bottom: 1px solid #ddd;
  height: 140px;
}

.jd-content {
  height: 480px;
  margin-top: 10px;
  display: flow-root;
}

.left-menu {
  width: 190px;
  height: 480px;
  float: left;
  margin-right: 10px;
}

.lb-1 {
  width: 590px;
  height: 480px;
  float: left;
  margin-right: 10px;
}
.lb-2 {
  width: 190px;
  height: 480px;
  float: left;
  margin-right: 10px;
}
.p-home {
  width: 190px;
  height: 480px;
  float: left;
}
.jd-seckill {
  height: 260px;
}
.countdown {
  height: 260px;
  float: left;
  width: 190px;
}
.lb-3 {
  height: 260px;
  float: left;
  width: 800px;
}